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authorJens Axboe <jens.axboe@oracle.com>2007-11-07 13:54:07 +0100
committerJens Axboe <jens.axboe@oracle.com>2007-11-07 13:54:07 +0100
commit8ec680e4c3ec818efd1652f15199ed1c216ab550 (patch)
tree5f58d77e0661d720cbf1443aa5c1153ee930d37c /drivers/block
parent0e7be9edb9134f833278c381b6feabb54b875208 (diff)
ioprio: allow sys_ioprio_set() value of 0 to reset ioprio setting
Normally io priorities follow the CPU nice, unless a specific scheduling class has been set. Once that is set, there's no way to reset the behaviour to 'none' so that it follows CPU nice again. Currently passing in 0 as the ioprio class/value will return -1/EINVAL, change that to allow resetting of a set scheduling class. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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